We've had a lot of interest in twitter since we mentioned our auto tweet function in a customer newsletter. What we've done is added the ability for content editors tweet what they have just submitted using our content management system. So when you add a piece of news or a blog article, the next page says "tweet this?" and shows an (editable) preview of your subject line along with an automatically generated link. Once you click 'send' (and log in to twitter if you aren't already) your item is posted.